Take this for what you will, but in Bill Simmons's book, he ranks the best 96 players in history, and he has Elgin Baylor at #14 as the best of all-time with no ring.
Then Malone (#18), Barkley (#19), LeBron (#20), and Stockton (#24) to round out that top 5.
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Thank you, Eddie Guerrero.
http://www.wwe.com/f/styles/photo_large/public/photo/image/2012/04/33_Moscow_04112012jg_02128.jpg